International Harvester Scout II
1971–80
Factory gearing, tires, angles and brakes for the Scout II, and what the usual upgrades do to it. Every number is from the maker's own figures unless the calculators say otherwise. A few figures here are still waiting on a factory document; the calculators mark them.
Axle ratio2.72–4.27Factory, by trim
Crawl ratio39.3:1Best trim: 1980 (Dana 300 transfer case) (H78-15 tires)
Angles43 · 20 · 23°Approach, breakover, departure
Clearance7.7 in7.6 to 7.7 in by trim
Highway mpg8Estimate, not EPA rated
Trims
7 we have figures for| Trim | Tire | Transmission | Axle | Angles | Clearance | Open |
|---|---|---|---|---|---|---|
| 1971–74 (Dana 30 front, any engine) (E78-15 tires) | 27.0 | 3-speed automatic | 3.31 / 3.73 / 4.27 | 43 · 20 · 23 | 7.7 in | Use → |
| 1975–79 4-196, 3-speed manual (H78-15 tires) | 28.3 | 3-speed manual | 4.09 | 44 · 20 · 26 | 7.6 in | Use → |
| 1975–79 4-196, 4-speed close ratio (H78-15 tires) | 28.3 | 4-speed manual close ratio | 3.54 / 3.73 / 4.09 | 44 · 20 · 26 | 7.6 in | Use → |
| 1975–79 V-304/V-345, 3-speed manual (H78-15 tires) | 28.3 | 3-speed manual | 3.54 / 3.73 / 4.09 | 44 · 20 · 26 | 7.6 in | Use → |
| 1975–79 V-304/V-345, 4-speed close ratio or automatic (H78-15 tires) | 28.3 | 4-speed manual close ratio, 3-speed automatic | 3.07 / 3.54 / 3.73 / 4.09 | 44 · 20 · 26 | 7.6 in | Use → |
| 1975–79 V8, optional 10-15 LT On-Off tires | 31.0 | 3-speed manual, 4-speed manual close ratio, 3-speed automatic | 3.07 / 3.54 / 3.73 / 4.09 | 44 · 20 · 26 | 7.6 in | Use → |
| 1980 (Dana 300 transfer case) (H78-15 tires) | 28.3 | 4-speed manual close ratio, 3-speed automatic | 2.72 / 3.31 / 3.54 / 3.73 | 44 · 20 · 26 | 7.6 in | Use → |
Size
- Wheelbase
- 100 in
- Front overhang
- 24 in
- Rear overhang
- 42.2 in
- Height
- 66 in
- Body
- Short wheelbase SUV
- Stock tires
- 27.0, 28.3, 31.0
Transmissions and low range
- 3-speed manual (IH T-332, Borg-Warner T-15D)
- 3 · 1.83 · 1
- 4-speed manual close ratio (IH T-428, Warner T-19 type)
- 4.02 · 2.41 · 1.41 · 1
- 3-speed automatic (IH T-407, Chrysler A-727 TorqueFlite)
- 2.45 · 1.45 · 1
- Low range, tc-145
- 2.03:1
- Low range, tc-146
- 2.62:1
Axles
- Front
- Dana 44 (IH FA-44) from 1974; Dana 30 (FA-13) 1971–74
- Rear
- Dana 44 semi-floating (IH RA-18, Trac-Lok RA-28)
- 2.72 ratio
- 1980 (Dana 300 transfer case) (H78-15 tires)
- 3.07 ratio
- 1975–79 V-304/V-345, 4-speed close ratio or automatic (H78-15 tires), 1975–79 V8, optional 10-15 LT On-Off tires
- 3.31 ratio
- 1971–74 (Dana 30 front, any engine) (E78-15 tires), 1980 (Dana 300 transfer case) (H78-15 tires)
- 3.54 ratio
- 1975–79 4-196, 4-speed close ratio (H78-15 tires), 1975–79 V-304/V-345, 3-speed manual (H78-15 tires), 1975–79 V-304/V-345, 4-speed close ratio or automatic (H78-15 tires), 1975–79 V8, optional 10-15 LT On-Off tires, 1980 (Dana 300 transfer case) (H78-15 tires)
- 3.73 ratio
- 1971–74 (Dana 30 front, any engine) (E78-15 tires), 1975–79 4-196, 4-speed close ratio (H78-15 tires), 1975–79 V-304/V-345, 3-speed manual (H78-15 tires), 1975–79 V-304/V-345, 4-speed close ratio or automatic (H78-15 tires), 1975–79 V8, optional 10-15 LT On-Off tires, 1980 (Dana 300 transfer case) (H78-15 tires)
- 4.09 ratio
- 1975–79 4-196, 3-speed manual (H78-15 tires), 1975–79 4-196, 4-speed close ratio (H78-15 tires), 1975–79 V-304/V-345, 3-speed manual (H78-15 tires), 1975–79 V-304/V-345, 4-speed close ratio or automatic (H78-15 tires), 1975–79 V8, optional 10-15 LT On-Off tires
- 4.27 ratio
- 1971–74 (Dana 30 front, any engine) (E78-15 tires)
- Ratios made for it
- 3.73 · 4.11 · 4.56
Brakes
- Front rotor
- 11.75 in, 298 mm
- Front caliper piston
- 78.6 mm
- Rear drum
- 11.03 in, 280 mm
- Rear
- drum (11 x 2.58 in)
Suspension
- Front
- solid axle on leaf springs
- Rear
- leaf springs, solid axle
- Rear layout
- Leaf springs
Fuel economy
- Highway, not EPA rated
- about 8 mpg
- Where it comes from
- Road test, fast motorway journey (Scout SS II (Goldstar Baja Cruiser) 345 V8, 3-speed automatic, UK)
- As published
- 10 mpg-imp
- Source
- motorsportmagazine.com
Aftermarket bumpers
6 listedMakers almost never publish angles, bottom heights or how far a bumper tucks, so these fill in as owners measure them. Measured yours? Add it on the rig page and every owner of this Scout II sees how it does on their tires and lift.
Front 3
- Affordable Offroad Affordable Bullbar Winch Front Bumper-International Scout 80-800 & Scout II (’60-’80)65 lb · $395 · winch ready
- Affordable Offroad Elite Prerunner Winch Front Bumper-International Scout 80-800 & Scout II (’60-’80)66 lb · $510 · winch ready
- Anything Scout C-Channel Bumper - Scout II, Terra, Traveler$300
Every calculator, set up for the Scout II
Tire sizeBigger tires: speedo, clearance, angles and brakes.Compare tiresRegearHighway RPM on every ratio and mpg.Pick your gearsCrawl ratioHow slow it creeps, against other trucks.Work out crawlSpeedometerWhat it really reads on new tires.Fix your speedoLinksAnti-squat and what a lift does to it.Check your linksYour rigBuild sheet and measured angles.Start a build sheetLeaderboardsWhere the Scout II ranks against every stock truck.See where it ranks
Source: archive.org.
Use at your own risk. These calculators are here to help you plan and to inform your decisions, not to sign off on a build. Many numbers are estimates worked out from factory figures, and some factory figures are not yet confirmed. Check every number against your own truck, its manuals and a qualified shop before you buy parts, cut, weld, lift, regear or drive on it. Long Range Desert Tools is not liable for anything you do based on these calculators or their results. The full terms are in our policies.